DERIVATIVES AND HEDGING ACTIVITIES - Schedule of Interest Rate Swap on Consolidated Statement of Income (Details) - Interest Rate Swap - Designated as Hedging Instrument - Fair Value Hedging - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Net effect on interest income	$ (3,500)	$ 113	$ (3,891)	$ 113
Interest Income on Loans
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative - interest rate swap, interest income	(3,485)	114	(3,947)	114
Hedged items - loans, interest income	$ (15)	$ (1)	$ 56	$ (1)